Firearm Sound Suppressor

ABSTRACT

A sound suppressor for a firearm includes a housing, a door, and a piston. The housing defines a longitudinal axis and includes a proximal end and a distal end opposite the proximal end. The distal end defines an exit opening. The longitudinal axis extends between the proximal end and the distal end and intersects the exit opening. The door is disposed within the housing and is moveable between an open position and a closed position. The longitudinal axis intersects the door in the closed position and bypasses the door in the open position. The piston is coupled to the housing and the door and is configured to move the door between the closed position and the open position.

FIELD

The present disclosure relates generally to a sound suppressor for a firearm, and more particularly to a sound suppressor having a closure mechanism.

BACKGROUND

This section provides background information related to the present disclosure and is not necessarily prior art.

Sound is generated by numerous sources when a firearm is discharged or otherwise fired. For example, high-temperature and high-pressure propellant gases escaping and expanding from the muzzle of the firearm can generate a shockwave that produces a loud muzzle blast. Sound suppressors are often used with firearms to slow or cool down the escaping propellant gas, thereby reducing the amount of noise (e.g., sound intensity or volume) generated when the firearm is discharged. Such suppressors often employ baffles, spacers, or packing material to affect the slowing or cooling down of the escaping propellant gas.

While known firearm sound suppressors have proven acceptable for their intended purposes, a continuous need for improvement in the relevant art remains.

SUMMARY

This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.

One aspect of the disclosure provides a sound suppressor for a firearm. The sound suppressor includes a housing, a door, and a piston. The housing defines a longitudinal axis and includes a proximal end and a distal end opposite the proximal end. The distal end defines an exit opening. The longitudinal axis extends between the proximal end and the distal end and intersects the exit opening. The door is disposed within the housing and is moveable between an open position and a closed position. The longitudinal axis intersects the door in the closed position and bypasses the door in the open position. The piston is coupled to the housing and the door and is configured to move the door between the closed position and the open position.

Implementations of the disclosure may include one or more of the following optional features. In some implementations, the sound suppressor includes a cylinder. The piston may be translatably disposed within the cylinder. The housing may define an aperture. The cylinder may be at least partially disposed within the aperture. The cylinder may include an adjustment mechanism operable to modify a biasing force of the piston on the door.

In some implementations, the door includes a receiver defining a channel. The piston may be at least partially disposed within the channel. The receiver may include a first L-shaped bracket and a second L-shaped bracket. The piston may define a T-shaped construct at least partially disposed between the first L-shaped bracket and the second L-shaped bracket. The piston may be translatably disposed within the channel.

In some implementations, the door is pivotally coupled to the distal end of the housing.

Another aspect of the disclosure provides a sound suppressor for a firearm. The sound suppressor may include a housing and a first baffle. The housing defines a longitudinal axis and includes a proximal end and a distal end opposite the proximal end. The distal end defines an exit opening. The longitudinal axis extends between the proximal end and the distal end and intersects the exit opening. The first baffle is disposed within the housing and includes a main body portion and a closure mechanism coupled to the main body portion. The closure mechanism is moveable relative to the main body portion between a closed position and an open position. The main body portion includes a proximal end and a distal end. The proximal end at least partially defines a first opening. The distal end at least partially defines a second opening. The closure mechanism includes a proximal end at least partially defining the first opening in the closed position. The longitudinal axis intersects the closure mechanism in the open position.

Implementations of this aspect of the disclosure may include one or more of the following optional features. In some implementation, the closure mechanism at least partially covers the exit opening in the closed position.

In some implementation, the closure mechanism is pivotally coupled to the main body portion proximate the second opening.

In some implementation, at least one of the main body portion or the closure mechanism bias the closure mechanism from the closed position to the open position.

In some implementation, the closure mechanism is biased into the open position.

In some implementation, the sound suppressor further comprises a second baffle disposed within the housing between the first baffle and the proximal end of the housing. The second baffle may define a plurality of apertures.

In some implementation, the main body portion includes a first concave inner surface and the closure mechanism includes a second concave inner surface. The first concave inner surface and the second concave inner surface may collectively define a parabolic shape.

Yet another aspect of the disclosure provides a baffle for a sound suppressor. The baffle may define a proximal opening and a distal opening and may be disposed about a longitudinal axis extending through the proximal opening and the distal opening. The baffle comprises a main body portion and a closure mechanism. The main body portion includes a first concave inner surface and a first convex outer surface. The closure mechanism is coupled to the main body portion and is moveable relative to the main body portion between a closed position and an open position. The longitudinal axis intersects the closure mechanism in the closed position.

Implementations of this aspect of the disclosure may include one of more of the following optional features. In some implementations, the main body portion and the closure mechanism collectively define the proximal opening and the distal opening.

In some implementations, the longitudinal axis intersects the proximal opening and the distal opening.

In some implementations, the closure mechanism includes a second concave inner surface and a second convex outer surface. The first concave inner surface and the second concave inner surface may collectively define a parabolic shape.

In some implementations, the closure mechanism is pivotally coupled to the main body portion proximate the distal opening.

Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.

DRAWINGS

The drawings described herein are for illustrative purposes only of selected configurations and not all possible implementations, and are not intended to limit the scope of the present disclosure.

FIG. 1 is an exploded view of a sound suppressor including a closure mechanism in accordance with the principles of the present disclosure;

FIG. 2A is a cross-sectional view of the sound suppressor of FIG. 1 taken along a longitudinal axis of FIG. 1 when the closure mechanism is in an open position;

FIG. 2B is a cross-sectional view of the sound suppressor of FIG. 1 taken along a longitudinal axis of FIG. 1 when the closure mechanism is in a closed position;

FIG. 3 is perspective view of the closure mechanism of FIG. 1 in a closed position, a portion of the sound suppressor of FIG. 1 shown in hidden line format for clarity;

FIG. 4 is an exploded view of another sound suppressor including a closure mechanism in accordance with the principles of the present disclosure;

FIG. 5 is a perspective view of the closure mechanism of FIG. 4;

FIG. 6A is a cross-sectional view of the sound suppressor of FIG. 4 taken along a longitudinal axis of FIG. 4 when the closure mechanism of FIG. 4 is in an open position;

FIG. 6B is a cross-sectional view of the sound suppressor of FIG. 4 taken along a longitudinal axis of FIG. 4 when the closure mechanism of FIG. 4 is in a closed position;

FIG. 7 is an exploded view of another sound suppressor including a closure mechanism in accordance with the principles of the present disclosure;

FIG. 8 is a perspective view of the closure mechanism of FIG. 7;

FIG. 9A is a cross-sectional view of the sound suppressor of FIG. 7 taken along a longitudinal axis of FIG. 7 when the closure mechanism of FIG. 7 is in an open position; and

FIG. 9B is a cross-sectional view of the sound suppressor of FIG. 7 taken along a longitudinal axis of FIG. 7 when the closure mechanism of FIG. 7 is in a closed position.

Corresponding reference numerals indicate corresponding parts throughout the drawings.

DETAILED DESCRIPTION

Example configurations will now be described more fully with reference to the accompanying drawings. Example configurations are provided so that this disclosure will be thorough, and will fully convey the scope of the disclosure to those of ordinary skill in the art. Specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of configurations of the present disclosure. It will be apparent to those of ordinary skill in the art that specific details need not be employed, that example configurations may be embodied in many different forms, and that the specific details and the example configurations should not be construed to limit the scope of the disclosure.

The terminology used herein is for the purpose of describing particular exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms “comprises,” “comprising,” “including,” and “having,” are inclusive and therefore specify the presence of features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order discussed or illustrated, unless specifically identified as an order of performance. Additional or alternative steps may be employed.

When an element or layer is referred to as being “on,” “engaged to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly on, engaged, connected, attached, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being “directly on,” “directly engaged to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.

The terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections. These elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example configurations.

With reference to FIGS. 1-3, a sound suppressor 10 is shown. As will be explained in more detail below, the sound suppressor 10 may be coupled to a firearm (not shown) to reduce the volume of the sound produced by the firearm during use thereof. The sound suppressor 10 may include a housing 12, one or more inner sleeves 16, one or more baffles 18, an insulator 20, one or more baffles 140, one or more screens 142, and one or more couplers 144. The housing 12 may extend along a longitudinal axis A1 and include a proximal end 26, a distal end 28, an inner surface 30, and an outer surface 32. The distal end 28 may be opposite the proximal end 26. The housing 12 may be formed from one or more of a variety of materials, including, for example, aluminum, steel, or another suitable metal material.

The inner and outer surfaces 30, 32 may surround and extend along the longitudinal axis A1 from the proximal end 26 to the distal end 28, such that the inner surface 30 defines a passage 34 extending through the housing 12 from the proximal end 26 to the distal end 28. The proximal end 26 of the housing 12 may define an entrance opening (not shown), while the distal end 28 of the housing 12 may define an exit opening 38. The entrance opening 35 may be in fluid communication with the exit opening 38 through the passage 34.

In some implementations, the inner and outer surfaces 30, 32 each define a cylinder or a polygonal prism extending along and about the longitudinal axis A1. It will be appreciated, however, that the inner or outer surface 30, 32 may define other shapes within the scope of the present disclosure.

A portion of the inner or outer surface 30, 32 may include a threaded portion 36 for securing the housing 12 to the endcap 14. For example, as illustrated in FIG. 2, in some implementations, the outer surface 32 includes a male threaded portion 39 extending from the proximal end 26 along and about the longitudinal axis A1.

As illustrated in FIGS. 1 and 2, the housing 12 may define a plurality of perforations or apertures 40 extending through the inner and outer surfaces 30, 32. In some implementations, the apertures 40 define a circular or cylindrical shape extending through the inner and outer surfaces 30, 32. In this regard, the apertures 40 may define a diameter greater than 0.75 millimeters. In particular, the apertures 40 may define a diameter greater than 1.0 millimeter. The apertures 40 may collectively define one or more patterns extending along or about the longitudinal axis A1. For example, in some implementations, the apertures 40 may collectively define a helical pattern extending from the proximal end 26 to the distal end 28. In some implementations, a plurality of groups of the apertures 40 may each collectively define a circle extending about the longitudinal axis A1, such that the plurality of groups of the apertures 40 collectively define (i) a plurality of circular patterns extending about the longitudinal axis A1 and (ii) a plurality of linear patterns extending along (e.g., substantially parallel to) the longitudinal axis A1.

With reference to FIG. 2, the endcap 14 may extend along a longitudinal axis A2 and include a proximal end 44, a distal end 46, an inner surface 48, and an outer surface 50. The distal end 46 may be opposite the proximal end 44. As illustrated in FIG. 3, the inner surface 48 may surround and extend along the longitudinal axis A2 from the proximal end 44 toward the distal end 46. Accordingly, the inner surface 48 may define a passage 52 extending through the endcap 14 from the proximal end 44 toward the distal end 46. In some implementations, the distal end 46 of the endcap 14 may include a counterbore 58 defined in part by a shoulder 60 extending radially outward from the inner surface 48 of the endcap 14. The counterbore 58 may include a threaded portion 62 extending from the distal end 46 toward the shoulder 60 to threadingly engage the threaded portion 39 of the housing 12 in the assembled configuration.

The inner sleeves 16 may define a hollow construct extending along a longitudinal axis A3 and having a proximal end 66, a distal end 68, an inner surface 70, and an outer surface 72. In some implementations, the first inner sleeve 16 a may define a polygonal prism extending along the longitudinal axis A3. The distal end 68 may be opposite the proximal end 66. The first inner sleeve 16 a may be formed from one or more of a variety of materials, including, for example, aluminum, steel, or another suitable metal material.

As illustrated in FIG. 2, the inner and outer surfaces 70, 72 may surround and extend along the longitudinal axis A3 from the proximal end 66 to the distal end 68, such that the inner and outer surfaces 70, 72 define a passage 74 extending through the first inner sleeve 16 a from the proximal end 66 to the distal end 68. The proximal end 66 of the first inner sleeve 16 a may define an entrance opening, while the distal end 68 of the first inner sleeve 16 a may define an exit opening. In this regard, the entrance opening may be in fluid communication with the exit opening through the passage 74.

In some implementations, the inner or outer surface 70, 72 each define a plurality of undulations 79 disposed about the longitudinal axis A3. As illustrated in FIG. 2, in some implementations, the undulations 79 define V-shapes or profiles disposed symmetrically about the longitudinal axis A3. It will be appreciated, however, that the undulations 79 may define other shapes (e.g., U-shape, a square wave shape, etc.) within the scope of the present disclosure. Each sleeve 16 may define a plurality of perforations or apertures 90 extending through the inner and outer surfaces 70, 72. The apertures 90 may define a maximum dimension extending across the apertures 90 as the apertures 90 extend through the sleeve 16. The maximum dimension may be less than 1.0 millimeter. In particular, the maximum dimension may be less than 0.50 millimeter. In some implementations, the maximum dimension is less than 0.20 millimeter. The thickness of the inner sleeve 16 may be between 100% and 500% of the maximum dimension of the apertures 90. In some implementations, the thickness of the inner sleeve 16 is greater than 500% of the maximum dimension of the apertures 90. In some implementations, the apertures 90 define a circular or cylindrical shape extending through the inner and outer surfaces 70, 72. In this regard, the maximum dimension may define a diameter of the apertures 90.

The apertures 90 may collectively define one or more patterns extending along or about the longitudinal axis A3. For example, in some implementations, the apertures 90 may collectively define a helical pattern extending from the proximal end 66 to the distal end 68. In some implementations, a plurality of groups of the apertures 90 may each collectively define a circle extending about the longitudinal axis A3, such that the plurality of groups of the apertures 90 collectively define (i) a plurality of circular patterns extending about the longitudinal axis A3 and (ii) a plurality of linear patterns extending along (e.g., substantially parallel to) the longitudinal axis A3. In this regard, the distance between each aperture 90 and an adjacent aperture 90 may be less than 10 millimeters. In some implementations, the distance between each aperture 90 and an adjacent aperture 90 is less than 5 millimeters. In this regard, the distance between each aperture 90 and an adjacent aperture 90 may be between 100% and 5000% of the maximum dimension D2 of the apertures 90.

With reference to FIG. 2, each baffle 18 may define a cylindrical construct having a proximal end 96, a distal end 98, an inner surface 100, and an outer surface 102. The distal end 98 may be opposite the proximal end 96. The baffles 18 may be formed from one or more of a variety of materials, including, for example, aluminum, steel, or another suitable metal material.

As illustrated in FIG. 2, the inner and outer surfaces 100, 102 may surround and extend along the longitudinal axis A4 from the proximal end 96 to the distal end 98. Accordingly, the inner surface 100 may define a passage 104 extending through the baffle 18 from the proximal end 96 to the distal end 98. The proximal end 96 of the baffle 18 may define an entrance opening, while the distal end 98 of the baffle 18 may define an exit opening. In this regard, the entrance opening may be in fluid communication with the exit opening through the passage 104.

With reference to FIG. 2, the insulator 20 may define a substantially cylindrical construct having a proximal end 108, a distal end 110, an inner surface 112, and an outer surface 114. The distal end 110 may be opposite the proximal end 108. The insulator 20 may be formed from one or more of a variety of materials, including, for example, a mineral wool, a steel wool, or other fibrous material.

As previously described, in the assembled configuration, the inner sleeves 16 may be disposed within the housing 12. In this regard, the maximum diameter, or other similar dimension, defined collectively by the outer surface 72, may be less than or equal to the diameter of the inner surface 30 of the housing 12. In some implementations, the maximum diameter defined collectively by the outer surface 72 may be equal to the diameter of the inner surface 30 of the housing 12 such that the outer surface 72 of the inner sleeve 16 engages the inner surface 30 of the housing 12.

The baffle(s) 18 may be disposed within the housing 12 such that (i) the outer surface 102 of the baffle 18 engages the inner surface 30 of the housing 12, (ii) the distal ends 68 of the sleeves 16 engage the proximal end 96 of the baffle 18, and (iv) the proximal end 66 of the sleeves 16 engage the distal end 98 of the baffle 18. In some implementations, the sleeves 16 a may be fastened to (e.g., adhesive, welding, etc.), or monolithically formed with, one or more of the baffles 18.

In some implementations, the suppressor 10 includes a plurality of baffles 18 such that the suppressor 10 defines (i) a first expansion chamber or sound-suppressing region between a first baffle 18 and the proximal end 26 of the housing 12, (ii) a second sound-suppressing region between the first baffle 18 and a second baffle 18, (iii) a third sound-suppressing region between the second baffle 18 and the third baffle 18, and (iv) a fourth sound-suppressing region 150 between the third baffle 18 and the distal end 28 of the housing 12. It will be appreciated, however, that the suppressor 10 may include more or less than three baffles 18, such that the suppressor 10 defines more or less than four sound-suppressing regions within the scope of the present disclosure.

The insulator 20 may be disposed within one or both of the housing 12 and the endcap 14. For example, in some implementations, a first portion of the insulator 20 is disposed within the housing 12 and a second portion of the insulator 20 is disposed within the endcap 14. In particular, the first portion of the insulator 20 may be disposed within the endcap 14 such that (i) the outer surface 146 engages the inner surface 48 of the endcap 14 and (ii) the proximal end 108 is aligned (e.g., coplanar or flush) with the proximal end 44 of the endcap 14. The second portion of the insulator 20 may be disposed within the housing 12 such that (i) the outer surface of the insulator 20 engages the inner surface 70 of the sleeve 16 and (ii) the distal end 110 abuts one of the baffles 18. The shell assembly 22 may be disposed within the housing 12. For example, the shell assembly 22 may be disposed within the passage 34 and extend from the proximal end 26 to the distal end 28.

The one or more baffles 140 may extend along a longitudinal axis A5 and include a proximal end 152, a distal end 154, an inner surface 156, and an outer surface 158. As illustrated in FIGS. 1-2B, in some implementations, the suppressor 10 includes two baffles 140-1, 140-2. It will be appreciated, however, that the suppressor 10 may include more or less than two baffles 140 within the scope of the present disclosure.

The baffles 140 are generally shown as defining a generally circular cross-sectional shape. In some implementations, the outer surface 158 define a cross-sectional size that is the same as a cross-sectional size defined by the inner surface 30 of the housing 12. In this regard, while the outer surface 158 is generally shown as defining a circular cross-sectional shape, the outer surface 158 may define other cross-sectional shapes (e.g., square, oval, rectangle, etc.) within the scope of the present disclosure.

The distal end 154 may be opposite the proximal end 152. The inner and the outer surfaces 156, 158 may surround and extend along the longitudinal axis A5 from the proximal end 152 toward the distal end 154, such that the inner and the outer surfaces 156, 158 define a thickness T7 (FIG. 2A) extending therebetween. In some implementations, the thickness T7 is uniform from the proximal end 152 to the distal end 154.

As illustrated in FIGS. 1-2B, the inner surface 156 may define a passage 160 extending through the baffle 140 from the proximal end 152 to the distal end 154. The baffle 140 may be formed from one or more of a variety of materials, including, for example, aluminum, steel, or another suitable metal material.

With continued reference to FIGS. 1-2B, the baffle 140 may include a pair of openings 162-1, 162-2. In some implementations, a first opening 162-1 is disposed in the proximal end 152 of the baffle 140, and a second opening 162-2 is disposed in the distal end 154 of the baffle 140. The second opening 162-2 may be larger than the first opening 162-1. In some examples, the inner surface 156 of the baffle 140 may define a parabolic shape extending continuously and uniformly around the axis A5 from the first opening 162-1 toward the second opening 162-2. In this regard, the inner surface 156 may be concave. In particular, the inner surface 156 may define (i) a first concavity C1 in a cross-section taken along a plane extending parallel to the axis A5 (e.g., FIG. 2A), and (ii) a second concavity C2 in a cross-section taken along a plane disposed perpendicular to the axis A5, such that the inner surface 156 defines a paraboloid. In some implementations, the paraboloid is concentrically disposed about the axis A5.

The inner surface 156 may further define an angle β relative to the axis A5. In some implementations, the angle β decreases along the first concavity C1 between the proximal end 152 and the distal end 154. For example, the angle β may be between forty degrees and fifty degrees at the proximal end 152 and between zero degrees and ten degrees at the distal end 154. In some implementations, the angle β is forty-five degrees at the proximal end 152 and zero degrees at the distal end 154. Accordingly, the inner surface 156 may be substantially planar in a cross-section taken along a plane extending parallel to the axis A5 (e.g., FIG. 2A) proximate the distal end 154. In this regard, proximate the proximal end 152, a portion of the inner surface 156 may define a paraboloid, while proximate the distal end 154, a portion of the inner surface 156 may define a circular cylinder.

In some implementations, one or more of the baffles 140 (e.g., baffle 140-3) include a plurality of apertures 163. The apertures 163 may extend through the inner and outer surfaces 156, 158. In particular, the apertures 163 may extend in a direction substantially parallel to the axis A5 through the inner and outer surfaces 156, 158. While the apertures 163 are generally shown as being defined by a cylindrical surface of the baffle 140, and forming a circular shape in the inner and outer surfaces 156, 158, it will be appreciated that the apertures 163 may define, and/or otherwise form, other shapes within the scope of the present disclosure. As will be described in more detail below, the configuration (e.g., shape) of the inner surface 156 and the apertures 163 may direct the soundwaves produced by the firearm in a direction that is parallel to the axis A5. As illustrated in FIGS. 1-2B, in some implementations, the apertures 163 are disposed in only a portion of the baffles 140-3. For example, the apertures 163 may be disposed in only a portion of the inner and outer surface 156, 158 of the baffle 140-3. In particular, as illustrated in FIG. 3, the apertures 163 may be disposed in an area A defined by the proximal end 152, the distal end 154, and first and second lateral boundaries 166, 168 extending (e.g., linearly) between the proximal and distal ends 152, 154. In some implementations, the area A comprises between ten percent and thirty percent of a total area of the inner and/or outer surface 156, 158.

At least one of the baffles 140 (e.g., baffle 140-3) may include a closure mechanism 164. The closure mechanism 164 may include an inner surface 170, an outer surface 172, a first lateral edge 174, a second lateral edge 176 opposite the first lateral edge 174, a proximal end 177, and a distal end 178 opposite the proximal end 177. The inner surface 170 may define (i) a first concavity C1-1 in a cross-section taken along a plane extending parallel to the axis A5 (e.g., FIG. 2A), and (ii) a second concavity C2-1 in a cross-section taken along a plane disposed perpendicular to the axis A5, such that the inner surface 170 defines a portion of a paraboloid. In some implementations, the portion of the paraboloid defined by the inner surface 170 is concentrically disposed about the axis A5. The outer surface 172 may define (i) a first convexity C1-3 in a cross-section taken along a plane extending parallel to the axis A5 (e.g., FIG. 2A), and (ii) a second convexity C2-3 in a cross-section taken along a plane disposed perpendicular to the axis A5, such that the outer surface 172 defines a portion of a paraboloid. In some implementations, the portion of the paraboloid defined by the outer surface 172 is concentrically disposed about the axis A5. As illustrated in FIGS. 2A and 2B, the value of the first concavity C1-1 and/or the first convexity C1-3 may correspond to, and/or otherwise equal, the value of the first concavity C1 of the inner surface 156. The inner surface 170 may further define an angle β-1 relative to the axis A5, and the outer surface 172 may further define an angle β-1 relative to the axis A5. In some implementations, the angles β-1, β-2 are substantially equal to the angle β.

As illustrated in FIGS. 2A-2B, in the assembled configuration, the closure mechanism 164 may be moveably (e.g., pivotally) coupled to the baffle 140-3. For example, the distal end 178 of the closure mechanism 164 may be coupled to the baffle 140-3 proximate the distal end 154. In particular, the distal end 178 may be coupled to the baffle 140-3 by welding, mechanical fasteners (e.g., bolt(s)), or other suitable techniques. In other implementations, the closure mechanism 164 is integrally and/or monolithically formed with the baffle 140-3 as a unitary construct. As will be explained in more detail below, the closure mechanism 164 may be formed from a resilient material (e.g., spring steel or another suitable metal or polymeric material), such that the closure mechanism 164 is biased into an open position (e.g., FIGS. 1 and 2A) by the material of the closure mechanism 164 and/or by the fastening of the closure mechanism 164 to the baffle 140-3. In this regard, the closure mechanism 164 and the baffle 140-3 may form a living hinge proximate the distal end 178. Accordingly, during operation of the suppressor 10, the closure mechanism 164 may pivot about the distal end 178 defining an axis A6 (FIG. 3) proximate the second opening 162-2. In particular, the closure mechanism 164 may be biased into the open position (e.g., FIGS. 1 and 2A). For example, during operation of the suppressor 10, a first force may be applied on the closure mechanism 164, causing the closure mechanism 164 to pivot about the axis A6 from the open position (e.g., FIGS. 1 and 2A) to the closed position (e.g., FIGS. 2B and 3). Upon removal of the first force, the resilient material forming the closure mechanism 164 and/or the fastening of the closure mechanism 164 to the baffle 140-3 may apply a second force, opposite the first force, on the closure mechanism 164, causing the closure mechanism 164 to pivot about the axis A6 from the closed position (e.g., FIG. 2B) to the open position (e.g., FIGS. 1 and 2A). Accordingly, as will be explained in more detail below, during operation of the suppressor 10, the closure mechanism 164 may at least partially block the opening 38 of the housing 12 in the closed position. For example, in the closed position, the axis A5 may intersect the closure mechanism 164. As illustrated in FIG. 2B, in some implementations, the proximal end 177 of the closure mechanism 164 engages the distal end 28 of the housing 12 in the closed position.

The one or more screens 142 may surround the longitudinal axis A5 and include a proximal end 180, a distal end 182, and an outer surface 184. As illustrated in FIGS. 1-2B, in some implementations, the suppressor 10 includes two screens 142-1, 142-2. It will be appreciated, however, that the suppressor 10 may include more or less than two screens 142 within the scope of the present disclosure.

The screens 142 are shown as defining a shape corresponding to the shape of the baffles 140 (e.g., circular). For example, the outer surface 170 may define a cross-sectional size and shape that is the same as a cross-sectional size and shape defined by the outer surface 158 of the baffles 140 proximate the distal end 154. In this regard, while the outer surface 170 is generally shown as defining a circular cross-sectional shape, the outer surface 170 may define other cross-sectional shapes (e.g., square, oval, rectangle, etc.) within the scope of the present disclosure.

As illustrated in FIGS. 1-2B, the screens 142 may define a plurality of passages 186 extending therethrough from the proximal end 180 to the distal end 182, and may be formed from one or more of a variety of materials, including, for example, aluminum, steel, or another suitable metal material, such that the screens 142 form a mesh-type material having a plurality of the passages 186 allowing for fluid communication between the proximal and distal ends 180, 182 within the passage 34. In some implementations, the screens 142 may each define a central opening 188 allowing for fluid communication between the proximal and distal ends 180, 182 within the passage 34.

The couplers 144 may extend along the longitudinal axis A5 and include a proximal end 179, a distal end 181, an inner surface 183, and an outer surface 185. As illustrated in FIGS. 1-2B, in some implementations, the suppressor 10 includes two couplers 144-1, 144-2. It will be appreciated, however, that the suppressor 10 may include more or less than two couplers 144 within the scope of the present disclosure.

The couplers 144 are generally shown as defining a generally circular cylindrical shape. In some implementations, the outer surface 185 defines a cross-sectional size that is the same as a cross-sectional size defined by the inner surface 30 of the housing 12 a. In this regard, while the outer surface 185 is generally shown as defining a circular cross-sectional shape, the outer surface 185 may define other cross-sectional shapes (e.g., square, oval, rectangle, etc.) within the scope of the present disclosure. In particular, the cross-sectional size and shape of the outer surface 185 may match the size and shape of the outer surface 158 of the baffle 140 proximate the distal end 154 thereof, and/or the size and shape of the outer surface 184 of the screens 142.

The distal end 181 may be opposite the proximal end 179. The inner and the outer surfaces 183, 185 may surround and extend along the longitudinal axis A5 from the proximal end 179 toward the distal end 181. As illustrated in FIG. 1, the inner surface 183 may define a passage 187 extending through the coupler 144 from the proximal end 179 to the distal end 181. The couplers 144 may be formed from one or more of a variety of materials, including, for example, aluminum, steel, or another suitable metal material. The couplers 144 may further include a pair of openings 191-1, 191-2. In some implementations, a first opening 191-1 is disposed in the proximal end 179 of the coupler 144, and a second opening 191-2 is disposed in the distal end 181 of the coupler 144.

With reference to FIGS. 2A-2B, in an assembled configuration, the baffles 140 may be coupled to the housing 12. For example, in some implementations, the baffles 140 are disposed within the passage 34 of the housing 12. In particular, each baffle 140 may be secured within the passage in a friction-fit arrangement or by utilizing other suitable fastening systems (e.g., adhesive, welding, mechanical fasteners, etc.). In this regard, in the assembled configuration, the outer surface 158 of the baffle 140 may engage the inner surface 30 of the housing 12.

Each screen 142 may be disposed between consecutive baffles 140, or between a baffle 140 and the proximal end 26 of the housing 12, or between a baffle 140 and the distal end 28 of the housing 12. For example, as illustrated in FIGS. 2A-2B, in some implementations, the first screen 142-1 is disposed between the proximal end 26 of the housing 12 and the proximal end 152 of the first baffle 140-1. For example, the distal end 182 of the screen 142-1 may face and/or engage the proximal end 152 of the first baffle 140-1, while the proximal end 180 of the screen 142-1 may face the proximal end 26 of the housing 12. Similarly, the second screen 142-2 may be disposed between the first baffle 140-1 and the second baffle 140-2. In particular, the proximal end 180 of the second screen 142-2 may face and/or engage the distal end 154 of the first baffle 140-1, while the distal end 182 of the second screen 142-2 may face and/or engage the proximal end 152 of the second baffle 140-2. Similarly, the proximal end 180 of the third screen 142-3 may face and/or engage the distal end 154 of the second baffle 140-2, while the distal end 182 of the third screen 142-3 may face and/or engage the proximal end 26 of the third baffle 140-3. As previously described, while the suppressor 10 is generally shown and described herein as including three baffles 140 and three screens 142, it will be appreciated that the suppressor 10 may include more or less than three baffles 140 and more or less than three screens 142, each arranged in the previously described manner, within the scope of the present disclosure.

In some implementations, each coupler 144 is disposed between a screen 142 and a baffle 140 along the axis A5. For example, the first coupler 144-1 may be disposed between the screen 142-2 and the baffle 140-2, and the second coupler 144-2 may be disposed between the screen 142-3 and the baffle 140-3. In this regard, as illustrated in FIG. 2A, in some implementations, the proximal end 179 of a coupler 144 may engage the distal end 182 of an upstream screen 142 and the outer surface 158 of a downstream baffle 140, such that (i) a portion of each baffle 140 is disposed within the passage 187 of the coupler 144, and (ii) the screen is secured between the proximal end of the coupler 144 and distal end 154 of an upstream baffle 140. As previously described, while the suppressor 10 is generally shown and described herein as including three baffles 140 and three screens 142, it will be appreciated that the suppressor 10 may include more or less than three baffles 140 and more or less than four screens 142, each arranged in the previously described manner, within the scope of the present disclosure.

With reference to FIGS. 4-6B, another sound suppressor 10 a is shown. The structure and function of the sound suppressor 10 a may be substantially similar to that of the sound suppressor 10, apart from any exceptions described herein or shown in the Figures. Accordingly, the structure and/or function of similar features will not be described in detail. In addition, like reference numerals are used in the drawings to identify like features, while like reference numerals containing extensions (i.e., “a”) are used to identify those features that have been modified.

As will be explained in more detail below, the sound suppressor 10 a may be coupled to a firearm (not shown) to reduce the volume of the sound produced by the firearm during use thereof. The sound suppressor 10 a may include the housing 12, the proximal endcap 14, one or more inner sleeves 16, one or more of the baffles 18, the insulator 20, one or more of the baffles 140, one or more of the screens 142, one or more of the couplers 144, and a closure mechanism 164 a.

The housing 12 may define an aperture 190 extending through the inner and outer surfaces 30, 32. As will be explained in more detail below, the aperture 190 may be sized and shaped to receive a portion of the closure mechanism 164 a.

The closure mechanism 164 a may include a door 192, a hinge 194, and a actuator 196. As illustrated in FIGS. 6A and 6B, the door 192 may be pivotally supported by the housing 12 for rotation about an axis A7 between an open or resting position (FIG. 6A) and a closed or active position (FIG. 6B). As illustrated, the axis A7 may extend in a direction transverse (e.g., orthogonal) to the axis A5. In some implementations, the door 192 is pivotally coupled to the housing 12 via the hinge 194 for rotation about the axis A7. For example, in some implementations, the door 192 is pivotally coupled to the inner surface 30 of the housing 12 proximate the distal end 28. In the open position, the door 192 does not block the opening 38 relative to the axis A5, while in the closed position, the door 192 does block the opening 38 relative to the axis A5. In particular, in the open position, the axis A5 does not intersect the door 192, while in the closed position, the axis A5 does intersect the door 192.

As illustrated in FIG. 5-6B, the door 192 may include a proximal end 198 and a distal end 200 opposite the proximal end 198. The proximal end 198 may include a receiver 201 to receive a portion of the actuator 196. The receiver 201 may include a first lateral portion 202 and a second lateral portion 204. Each of the first and second lateral portions 202, 204 may include a base 206 coupled to, and extending from, the proximal end 198 of the door 192, and a leg 208 coupled to, and extending from, the base 206, such that the base 206 and the leg 208 form an L-shaped construct extending along the door 192. In this regard, the first and second lateral portions 202, 204 may cooperate to define a channel 210 extending along the door 192.

The actuator 196 may include a cylinder 212, a piston 214 moveably coupled to the cylinder 212, and a biasing member 215 configured to move the piston 214 relative to the cylinder 212. For example, in some implementations, the piston 214 is translatably disposed within the cylinder 212. In particular, the piston 214 may include a rod 216 and a plate 217 translatably disposed within the cylinder 212, and an arm 218 coupled to an end of the rod 216. The rod 216 and the arm 218 may define a T-shaped construct.

The cylinder 212 may include one or more apertures 219 and an adjustment mechanism 220 to selectively adjust a force required to move the piston 214 relative to the cylinder 212. The apertures 219 may allow for fluid communication between the passage 34 of the housing 12 and the interior of the cylinder 212. Adjusting (e.g., rotating) the adjustment mechanism 220 left or right may open or close one or more of the apertures 219, thereby increasing or decreasing the allowable rate of fluid flow through the apertures 219 between the passage 34 and the interior of the cylinder 212.

As will be explained in more detail below, during use, the actuator 196 may bias the door 192 from the closed position into the open position (e.g., in a clockwise direction relative to the view in FIGS. 6A and 6B) such that the door 192 does not block the opening 38 and the axis A5 does not intersect the door 192.

As illustrated in FIGS. 6A and 6B, in an assembled configuration, the closure mechanism 164 a may be disposed within the housing 12. For example, the actuator 196 may be at least partially disposed within the aperture 190 such that the adjustment mechanism 220 is accessible (e.g., visible) through the aperture 190. The piston 214 may be moveably coupled to the door 192. For example, in some implementations, the piston 214 is translatably disposed within the channel 210. In particular, the first portion of the arm 218 may be slidably disposed within a portion of the channel 210 defined by the first lateral portion 202, and a second portion of the arm 218 may be slidably disposed within a portion of the channel 210 defined by the second lateral portion 204.

With reference to FIGS. 7-9B, another sound suppressor 10 b is shown. The structure and function of the sound suppressor 10 b may be substantially similar to that of the sound suppressors 10 and/or 10 a, apart from any exceptions described herein or shown in the Figures. Accordingly, the structure and/or function of similar features will not be described in detail. In addition, like reference numerals are used in the drawings to identify like features, while like reference numerals containing extensions (i.e., “b”) are used to identify those features that have been modified.

As will be explained in more detail below, the sound suppressor 10 b may be coupled to a firearm (not shown) to reduce the volume of the sound produced by the firearm during use thereof. The sound suppressor 10 b may include the housing 12, the proximal endcap 14, one or more inner sleeves 16, one or more of the baffles 18, the insulator 20, one or more of the baffles 140, one or more of the screens 142, one or more of the couplers 144, and a closure mechanism 164 b.

The closure mechanism 164 b may include a door 192 b and the actuator 196. As illustrated in FIGS. 9A and 9B, the door 192 b may be supported by the housing 12 and/or the actuator 196 for translation in a direction transverse to the axis A5 between an open or resting position (FIG. 9A) and a closed or active position (FIG. 9B). In some implementations, the door 192 b is coupled to the actuator 196 for translation relative to the housing 12 between the open and closed positions. In the open position, the door 192 b does not block the opening 38 relative to the axis A5, while in the closed position, the door 192 b does block the opening 38 relative to the axis A5. In particular, in the open position, the axis A5 does not intersect the door 192 b, while in the closed position, the axis A5 does intersect the door 192 b.

As illustrated in FIG. 8-9B, in some implementations, the door 192 b defines a plate having a generally rectangular cuboid shape. It will be appreciate, however, that the door 192 b may define other shapes within the scope of the present disclosure.

In use, a bullet or other projectile may be discharged from the firearm, producing high pressure gas and generating a sound. High pressure gas may exit the barrel of the firearm and pass through the sound suppressor 10, 10 a, 10 b. As the high pressure gas passes through the sound suppressor 10, 10 a, 10 b the configuration and arrangement (e.g., relative size, shape, location, quantity, orientation, material, etc.), as described herein, of the housing 12, the sleeves 16, the baffles 140, the screens 142, the couplers 144, and the closure mechanisms 164, 164 a, 164 b can help to reduce the volume of sound generated by the firearm. For example, the parabolic shape of the inner surface 156 of the baffle(s) 140 allows the soundwaves produced by the firearm to be directed out of the firearm in a forward direction parallel to the axis A5. As the soundwaves exit the firearm they may travel approximately 1 to 5 centimeters in the direction parallel to the axis A5, before radially expanding. By preventing the soundwaves from radially expanding immediately upon exit from the firearm or the suppressor 10, 10 a, 10 b the volume of the sound produced by the firearm is reduced. Likewise, the configuration of the screen 142, including the passages 186, can help to resist the flow of gas therethrough, thereby absorbing the energy of the expanding gas and reducing the volume of the sound generated by the gas. In particular, the size, shape, and arrangement of the passages 186 restricts or impedes the flow of gas therethrough, thereby generating friction between the gas and the screen 142 at the passages 186, thereby reducing the volume of the sound generated by the firearm.

As the bullet discharged by the firearm passes through the suppressor 10, high pressure gases trailing the bullet may pass through the apertures 163 formed through one or more of the baffles 140 and apply a force on the outer surface 172 of the closure mechanism 164. The force on the outer surface 172 may cause the closure mechanism 164 to rotate about the axis A6 from the open position (FIG. 2A) to the closed position (FIG. 2B), thereby reducing the flow of gas through the exit opening 38 of the housing 12, which in turn reduces the volume of the sound generated by the gas flowing through the exit opening 38 upon the firing or discharging of the firearm. Once the force exerted by the gas flowing through the suppressor 10 is reduced to a predetermined level, the biasing force of the closure mechanism 164, that is opposite the force generated by the flow of gas, may cause the closure mechanism 164 to rotate about the axis A6 from the closed position to the open position.

As the bullet discharged by the firearm passes through the suppressor 10 a, 10 b high pressure gases trailing the bullet may enter the cylinder 212 through the apertures 219 and apply a force on the piston 214. In particular, the force of the high pressure gases entering the cylinder 212 through the apertures 219 may apply a force on the plate 217, biasing the door 192, 192 b in the closed position (e.g., FIGS. 6B, 9B). In this regard, the force on the plate 217 may cause the door 192 to rotate about an axis A7 from the open position (FIG. 6A) to the closed position (FIG. 6B), and, likewise, may cause the door 192 b to translate in a direction transverse to the axis A5 from the open position (FIG. 9A) to the closed position (FIG. 9B), thereby reducing the flow of gas through the exit opening 38 of the housing 12, which in turn reduces the volume of the sound generated by the gas flowing through the exit opening 38 upon the firing or discharging of the firearm. Once the force exerted by the gas flowing through the suppressor 10 a, 10 b is reduced to a predetermined level, the biasing force of the biasing member 215 on the plate 217, that is opposite the force generated by the flow of gas through the suppressor 10 a, 10 b, may cause the door 192 to rotate about the axis A7 from the closed position to the open position, and, likewise, may cause the door 192 b to translate in a direction transverse to the axis A5 from the closed position (FIG. 9B) to the open position (FIG. 9A).

The heat energy generated by the friction of the gas flowing through the suppressor 10, 10 a, 10 b is absorbed by the sleeves 16, thereby reducing the temperature and the pressure of the gas flowing through the suppressor 10, 10 a, 10 b. As the pressure of the gas flowing through the suppressor 10, 10 a, 10 b is reduced, the volume of the sound generated by the gas flowing through the exit opening 38 of the housing 12 may be reduced. For example, the configuration of the suppressor 10, 10 a, 10 b described herein may reduce the volume of the sound generated by the gas flowing through the exit opening 38 of the housing 12 upon the firing or discharging of the firearm by more than 30 decibels. In some implementations, the configuration of the suppressor 10, 10 a, 10 b described herein may reduce the volume of the sound generated by the gas flowing through the exit opening 38 of the housing 12 upon the firing or discharging of the firearm by more than 40 decibels.

The following Clauses provide an exemplary configuration for a sound suppressor for a firearm, as described above.

Clause 1: A sound suppressor for a firearm, the sound suppressor comprising a housing, a door, and a piston, the housing defining a longitudinal axis and having a proximal end and a distal end opposite the proximal end, the distal end defining an exit opening, the longitudinal axis extending between the proximal end and the distal end and intersecting the exit opening, the door disposed within the housing and moveable between an open position and a closed position, wherein the longitudinal axis intersects the door in the closed position and bypasses the door in the open position, and the piston coupled to the housing and the door and configured to move the door between the closed position and the open position.

Clause 2: The sound suppressor of Clause 1, further comprising a cylinder, the piston translatably disposed within the cylinder, wherein the housing defines an aperture, and wherein the cylinder is at least partially disposed within the aperture.

Clause 3: The sound suppressor of Clause 2, wherein the cylinder includes an adjustment mechanism operable to modify a biasing force of the piston on the door.

Clause 4: The sound suppressor of any of Clauses 1 to 3, wherein the door includes a receiver defining a channel, and wherein the piston is at least partially disposed within the channel.

Clause 5: The sound suppressor of Clause 4, wherein the receiver includes a first L-shaped bracket and a second L-shaped bracket, and wherein the piston defines a T-shaped construct at least partially disposed between the first L-shaped bracket and the second L-shaped bracket.

Clause 6: The sound suppressor of Clause 4 or Clause 5, wherein the piston is translatably disposed within the channel.

Clause 7: The sound suppressor of any of Clauses 1 to 6, wherein the door is pivotally coupled to the distal end of the housing.

Clause 8: A sound suppressor for a firearm, the sound suppressor comprising: a housing defining a longitudinal axis and having a proximal end and a distal end opposite the proximal end, the distal end defining an exit opening, the longitudinal axis extending between the proximal end and the distal end and intersecting the exit opening; and a first baffle disposed within the housing, the first baffle including a main body portion and a closure mechanism coupled to the main body portion and moveable relative to the main body portion between a closed position and an open position, the main body portion including a proximal end at least partially defining a first opening and a distal end at least partially defining a second opening, the closure mechanism including a proximal end at least partially defining the first opening in the closed position, and wherein the longitudinal axis intersects the closure mechanism in the open position.

Clause 9: The sound suppressor of Clause 8, wherein the closure mechanism at least partially covers the exit opening in the closed position.

Clause 10: The sound suppressor of Clause 8 or Clause 9, wherein the closure mechanism is pivotally coupled to the main body portion proximate the second opening.

Clause 11: The sound suppressor of any of Clauses 8 to 10, wherein at least one of the main body portion or the closure mechanism bias the closure mechanism from the closed position to the open position.

Clause 12: The sound suppressor of Clause 11, wherein the closure mechanism is biased into the open position.

Clause 13: The sound suppressor of any of Clauses 8 to 12, further comprising a second baffle disposed within the housing between the first baffle and the proximal end of the housing, the second baffle defining a plurality of apertures.

Clause 14: The sound suppressor of any of Clauses 8 to 13, wherein the main body portion includes a first concave inner surface and the closure mechanism includes a second concave inner surface, and wherein the first concave inner surface and the second concave inner surface collectively define a parabolic shape.

Clause 15: A baffle for a sound suppressor, the baffle defining a proximal opening and a distal opening and disposed about a longitudinal axis extending through the proximal opening and the distal opening, the baffle comprising: a main body portion having a first concave inner surface and a first convex outer surface; and a closure mechanism coupled to the main body portion and moveable relative to the main body portion between a closed position and an open position, wherein the longitudinal axis intersects the closure mechanism in the closed position.

Clause 16: The sound suppressor of Clause 15, wherein the main body portion and the closure mechanism collectively define the proximal opening and the distal opening.

Clause 17: The sound suppressor of Clause 15 or Clause 16, wherein the longitudinal axis intersects the proximal opening and the distal opening.

Clause 18: The sound suppressor of any of Clauses 15 to 17, wherein the closure mechanism includes a second concave inner surface and a second convex outer surface.

Clause 19: The sound suppressor of Clause 18, wherein the first concave inner surface and the second concave inner surface collectively define a parabolic shape.

Clause 20: The sound suppressor of any of Clauses 15 to 19, wherein the closure mechanism is pivotally coupled to the main body portion proximate the distal opening.

The foregoing description has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular configuration are generally not limited to that particular configuration, but, where applicable, are interchangeable and can be used in a selected configuration, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure. 

What is claimed is:
 1. A sound suppressor for a firearm, the sound suppressor comprising: a housing defining a longitudinal axis and having a proximal end and a distal end opposite the proximal end, the distal end defining an exit opening, the longitudinal axis extending between the proximal end and the distal end and intersecting the exit opening; a door disposed within the housing and moveable between an open position and a closed position, wherein the longitudinal axis intersects the door in the closed position and bypasses the door in the open position; and a piston coupled to the housing and the door and configured to move the door between the closed position and the open position.
 2. The sound suppressor of claim 1, further comprising a cylinder, the piston translatably disposed within the cylinder, wherein the housing defines an aperture, and wherein the cylinder is at least partially disposed within the aperture.
 3. The sound suppressor of claim 2, wherein the cylinder includes an adjustment mechanism operable to modify a biasing force of the piston on the door.
 4. The sound suppressor of claim 1, wherein the door includes a receiver defining a channel, and wherein the piston is at least partially disposed within the channel.
 5. The sound suppressor of claim 4, wherein the receiver includes a first L-shaped bracket and a second L-shaped bracket, and wherein the piston defines a T-shaped construct at least partially disposed between the first L-shaped bracket and the second L-shaped bracket.
 6. The sound suppressor of claim 4, wherein the piston is translatably disposed within the channel.
 7. The sound suppressor of claim 1, wherein the door is pivotally coupled to the distal end of the housing.
 8. A sound suppressor for a firearm, the sound suppressor comprising: a housing defining a longitudinal axis and having a proximal end and a distal end opposite the proximal end, the distal end defining an exit opening, the longitudinal axis extending between the proximal end and the distal end and intersecting the exit opening; and a first baffle disposed within the housing, the first baffle including a main body portion and a closure mechanism coupled to the main body portion and moveable relative to the main body portion between a closed position and an open position, the main body portion including a proximal end at least partially defining a first opening and a distal end at least partially defining a second opening, the closure mechanism including a proximal end at least partially defining the first opening in the closed position, and wherein the longitudinal axis intersects the closure mechanism in the open position.
 9. The sound suppressor of claim 8, wherein the closure mechanism at least partially covers the exit opening in the closed position.
 10. The sound suppressor of claim 8, wherein the closure mechanism is pivotally coupled to the main body portion proximate the second opening.
 11. The sound suppressor of claim 8, wherein at least one of the main body portion or the closure mechanism bias the closure mechanism from the closed position to the open position.
 12. The sound suppressor of claim 11, wherein the closure mechanism is biased into the open position.
 13. The sound suppressor of claim 8, further comprising a second baffle disposed within the housing between the first baffle and the proximal end of the housing, the second baffle defining a plurality of apertures.
 14. The sound suppressor of claim 8, wherein the main body portion includes a first concave inner surface and the closure mechanism includes a second concave inner surface, and wherein the first concave inner surface and the second concave inner surface collectively define a parabolic shape.
 15. A baffle for a sound suppressor, the baffle defining a proximal opening and a distal opening and disposed about a longitudinal axis extending through the proximal opening and the distal opening, the baffle comprising: a main body portion having a first concave inner surface and a first convex outer surface; and a closure mechanism coupled to the main body portion and moveable relative to the main body portion between a closed position and an open position, wherein the longitudinal axis intersects the closure mechanism in the closed position.
 16. The sound suppressor of claim 15, wherein the main body portion and the closure mechanism collectively define the proximal opening and the distal opening.
 17. The sound suppressor of claim 15, wherein the longitudinal axis intersects the proximal opening and the distal opening.
 18. The sound suppressor of claim 15, wherein the closure mechanism includes a second concave inner surface and a second convex outer surface.
 19. The sound suppressor of claim 18, wherein the first concave inner surface and the second concave inner surface collectively define a parabolic shape.
 20. The sound suppressor of claim 15, wherein the closure mechanism is pivotally coupled to the main body portion proximate the distal opening. 